cccc cccf cccl cccs ccee ccel ccfc ccff ccfl cclc ccls ccrc ccre ccrf ccrl ccrs ccsf ccsl ccss cec- cece cecs ceec ceel cees cef- cefc ceke cel- celc cele celf cell cels cer- cerc cere cerf cerl cers cesc cese cesr cess cfcf cfcl cfcs cffr cfls cfre cfse cfsl ckck ckcl ckcs cker ckfr cklf ckrc cksl clec clee clef clek cler cles clrs clsc crcc crce crcr cre- crec cree cres crfc crfl crfs crkc crkl crlf crls crss cscc csce cscf cscl cscr cscs csec csee cser csfc csfr csks cslr csrc csrs csse cssr e-cl eccc ecce eccl ecef eces ecfc ecfr ecfs ecks ecrc ecrf ecrl ecrr ecsc ecse ecss eecs eeee eees eefe eefl eeke eeks eele eels eerc eers eese eesk efes effs efke ekek eker ekes ekfc elce elec elee elef elek eler eles elfc elfe elfs elke elks elle ells else ercc erce erec erel erer eres erfc erfs erke erks erle erll errc erre errs erse esce escr escs esee esek esel eser eses esfs eske esks esse essl f--k fccf fces fcsc fcsl fece feck feek feel feer fees fefc fefe feff feke fele felf felk fell fels ferc fere ferk ferr fers fese fess ffcc ffee ffff ffrr ffss flcl flee fler fles frcc free fres frfc frsc fscc fsck fsec fssc fssf kccc kcck kccl kccr kcec kcee kcel kcfc kcfl kckc kckf kckk kckl kckr kclc kcle kclf kclk kcll kclr kcls kcrc kcrr kcrs kcsc kcse kcsf kcsr kcss keck kecr keef keek keel keer kees kefc keff kefr kefs kekc keke kekl keks kele kelf kelk kell ker- kerc kere kerf kerk kerl kerr kers kesc kesk kesr kess kfcf kfcr kfcs kfel kfer kfff kffk kflc kflf kfll kfls kfrc kfre kfrr kfrs kfse kfsk kfsr kkck kkcl kkcr kkcs kkfr kkfs kkkk kklc kklf kkll kkls kkrc kkre kkrf kkrk kkrl kkrr kkrs kkse kksf kksr kkss klcc klce klck klcl klcr klcs klec klee klef klek kler kles klfc klfe klff klkc klkk klkl klkr klks kllc klle kllk klls klrc klrf klrk klrr klrs klsc klse klsf klsr krcc krce krcl krcs krec kree kref krek kres krfc krfe krff krfs krkc krke krkk krkr krks krlc krle krlf krrc krre krrf krrk krrl krrr krrs krsc krse krsf krsk krsl krsr krss ksce ksck kscl kscr kscs ksec ksee ksek ksel kser ksfc ksfe ksfr kske kskf kskk kskr ksks kslc ksle kslk ksll kslr ksrf ksrr ksrs ksse kssl kssr ksss lccc lcce lccs lcer lces lcfc lcfr lcls lcrl lcrs lcsc lcsr lece leck leef leek leel leer lees lefe leff leke lekk leks lele lell lerc lere lerk lese lesk less lfcc lkfs lkrs llcc llcs llef lles llks lllc llll lrcs lrfc lrrc lrrr lrse ls-r lscs lses lsfc lsrc lssr rccc rccs rcfc rcle rcls rcsc rcsl rcss recc rece reck recr recs reef reek reel rees refe reff refl refr refs reke reks rele rell rels rere rers rese ress rfef rffc rffl rkkf rkss rlcs rlee rlef rlls rrfc rrle rrrr rscc rscs rsee rsfc rslc rsre rssl sccc scce sccl sccs scec scee scel scer scfc scfe sck- sckl scl- sclc sclk scls scr- scrc scre scrs scsc scsl scsr se-c se-e se-f se-k se-s sec- secc sece seck secr secs seec seef seek seel seer sees seff sefl seke sekk sele self selk sell sels serc sere serf serk serr sers sesc sese sess sfcc sfcs sfer sffc sflc sfls sfrc sfss skee skel sker skes skfc skss slcc slee sler sles slrc slre slrs slsc srcc srec sres srfc sscc ssce sscs ssec ssee sses ssfc ssfl sslc ssle ssrc ssrl ssrs sssc sssf ssss